Finding the Third Proportional to 9,072.38 and 13,878.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072.38 : 13,878.56 = 13,878.56 : x
2. Step 2: Convert to fraction form
   9,072.38/13,878.56 = 13,878.56/x
3. Step 3: Cross multiply
   9,072.38x = 13,878.56 × 13,878.56
4. Step 4: Simplify right side
   9,072.38x = 192,614,497.07
5. Step 5: Solve for x
   x = 192,614,497.07/9,072.38
6. Step 6: Final answer
   x = 21,230.88